I read Keats’ letters every once in a while.

Here he is, writing to his brothers. I was startled because I didn’t think this slang was used before the 20th C.

I am… getting initiated into a little band. They call drinking deep dyin’ scarlet. They call good wine a pretty tipple, and call getting a child knocking out an apple; stopping at a tavern they call hanging out. Where do you sup? Where do you hang out?